diff --git a/app/assets/javascripts/discourse/app/models/bookmark.js b/app/assets/javascripts/discourse/app/models/bookmark.js
index fb9a41b87e7..8086c81d2f1 100644
--- a/app/assets/javascripts/discourse/app/models/bookmark.js
+++ b/app/assets/javascripts/discourse/app/models/bookmark.js
@@ -89,16 +89,9 @@ const Bookmark = RestModel.extend({
 
   @discourseComputed("bumpedAt", "createdAt")
   bumpedAtTitle(bumpedAt, createdAt) {
-    const firstPost = I18n.t("first_post");
-    const lastPost = I18n.t("last_post");
-    const createdAtDate = longDate(createdAt);
-    const bumpedAtDate = longDate(bumpedAt);
-
-    return I18n.messageFormat("topic.bumped_at_title_MF", {
-      FIRST_POST: firstPost,
-      CREATED_AT: createdAtDate,
-      LAST_POST: lastPost,
-      BUMPED_AT: bumpedAtDate,
+    return I18n.t("topic.bumped_at_title", {
+      createdAtDate: longDate(createdAt),
+      bumpedAtDate: longDate(bumpedAt),
     });
   },
 
diff --git a/app/assets/javascripts/discourse/app/models/topic.js b/app/assets/javascripts/discourse/app/models/topic.js
index fbccc568e1f..662a050ceab 100644
--- a/app/assets/javascripts/discourse/app/models/topic.js
+++ b/app/assets/javascripts/discourse/app/models/topic.js
@@ -127,16 +127,9 @@ const Topic = RestModel.extend({
 
   @discourseComputed("bumpedAt", "createdAt")
   bumpedAtTitle(bumpedAt, createdAt) {
-    const firstPost = I18n.t("first_post");
-    const lastPost = I18n.t("last_post");
-    const createdAtDate = longDate(createdAt);
-    const bumpedAtDate = longDate(bumpedAt);
-
-    return I18n.messageFormat("topic.bumped_at_title_MF", {
-      FIRST_POST: firstPost,
-      CREATED_AT: createdAtDate,
-      LAST_POST: lastPost,
-      BUMPED_AT: bumpedAtDate,
+    return I18n.t("topic.bumped_at_title", {
+      createdAtDate: longDate(createdAt),
+      bumpedAtDate: longDate(bumpedAt),
     });
   },
 
diff --git a/config/locales/client.en.yml b/config/locales/client.en.yml
index 67a54b2b515..b093ae2e2bd 100644
--- a/config/locales/client.en.yml
+++ b/config/locales/client.en.yml
@@ -1962,7 +1962,6 @@ en:
 
     learn_more: "learn more..."
 
-    first_post: First post
     mute: Mute
     unmute: Unmute
     last_post: Posted
@@ -2904,8 +2903,9 @@ en:
           other {}
         }
 
-      # This string uses the ICU Message Format. See https://meta.discourse.org/t/7035 for translation guidelines.
-      bumped_at_title_MF: "{FIRST_POST}: {CREATED_AT}\n{LAST_POST}: {BUMPED_AT}"
+      bumped_at_title: |
+        First post: %{createdAtDate}
+        Posted: %{bumpedAtDate}
 
       browse_all_categories_latest: "<a href='%{basePath}/categories'>Browse all categories</a> or <a href='%{basePath}/latest'>view latest topics</a>."
       browse_all_categories_latest_or_top: "<a href='%{basePath}/categories'>Browse all categories</a>, <a href='%{basePath}/latest'>view latest topics</a> or see top:"